CN212358883U

CN212358883U - Green roof

Info

Publication number: CN212358883U
Application number: CN202022224459.3U
Authority: CN
Inventors: 康威; 崔熙钰; 崔延瑞; 鲍林林; 马凯丽
Original assignee: Henan Normal University
Current assignee: Henan Normal University
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-01-15
Anticipated expiration: 2030-10-09

Abstract

The utility model discloses a green roof belongs to sponge city and founds the field. The artificial roof comprises a roof retaining wall (1), a planting area (11) and a pebble area (12) are paved inside the roof retaining wall (1), the pebble area (12) is close to the inner side wall of the roof retaining wall (1), a partition plate (121) is arranged between the planting area (11) and the pebble area (12), the height of the partition plate (121) is lower than that of the roof retaining wall (1), and a drainage pipe (21) penetrating through the roof retaining wall is installed at the bottom of the pebble area (12). The utility model provides a current green roof do not have and be used for abluent attached facility, remaining pollutant can't be discharged, takes place the jam easily, causes the problem of unable normal work behind the long-term operation of green roof.

Description

Green roof

Technical Field

The utility model belongs to the technical field of the sponge city is founded, concretely relates to roof of afforestation.

Background

In recent years, urban inland inundation disasters are rare, the concept of sponge cities is continuously popularized in the world, at present, urban building roofs of China occupy about 40% -50% of urban impervious underlying surfaces, and the control of rainwater drainage of the urban building roofs is very important for urban rainwater flood management and disaster prevention and reduction. In recent years, green roofs have been widely regarded as a technology for solving the problem of regulating rainfall floods in complex cities. The green roof is a technology for effectively intercepting rainwater and reducing cost, and has great development potential and application value.

Chinese patent document CN211185127U discloses a green roof for constructing a sponge city, which comprises a roof and a water collection tank, wherein the roof is provided with a vegetation planting box, the bottom of the vegetation planting box is provided with a filter plate, the bottom of the vegetation planting box is provided with a plurality of water drainage holes, and the water collection tank is located below the planting box; the water is absorbed through cotton threads in the vegetation planting box, a storage battery communicated with the solar cell panel is arranged on one side of the water collecting tank, and the storage battery is electrically connected with the water pump and the large-flow water purifier respectively. This patent suffers from the following drawbacks: the vegetation planting box is not used for abluent attached facility, and remaining pollutant can't be discharged, takes place the jam easily, causes the unable normal work of green roof long-term operation back.

SUMMERY OF THE UTILITY MODEL

Problem to prior art existence, the utility model aims to solve the technical problem that a green roof is just provided, and it can wash green roof, realizes the washing maintenance on green roof, guarantees green roof normal operating, can reduce outer row runoff again.

The utility model aims to solve the technical problem that realize through such technical scheme, it includes the roof dado, has laid kind plant district and cobble district inside the roof dado, and the cobble district leans on the roof dado inside wall, is equipped with the baffle between kind plant district and the cobble district, and the baffle highly is less than the roof dado, is equipped with the drainage tube that passes the roof dado bottom the cobble district.

The rainwater in the planting area overflows and then enters the pebble area, and the excessive rainwater is guided out by a drainage pipe arranged in the pebble area. The pebble area is used as a peripheral protective layer of the green roof, when pollutants seriously block the pebble area, the pebbles in the pebble area are subjected to powerful flushing or overturning flushing by using tap water, the pollutants in the pebble area are thoroughly removed, the pebble area is kept to be permeable and smooth, and a good operation state is recovered again.

The technical effects of the utility model are that: the cleaning and maintenance of the green roof are realized, the long-term normal operation of the green roof is maintained, the service life of the green roof is prolonged, the green roof has applicability, and the method can be popularized and applied.

Drawings

The drawings of the utility model are as follows:

fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a second embodiment of the present invention.

In the figure, 1, a roof retaining wall; 11. a planting area; 111. a plant; 112. improving the soil layer; 113. a fine sand layer; 114. a filler layer; 12. a pebble zone; 121. a partition plate; 21. a drainage tube; 24. a discharge valve;

2. a bi-directional flow line; 22. a head tube; 23. a tail pipe; 25. a valve; 26. a water pump;

3. a reservoir; 31. a water delivery port; 32. a blowoff valve; 4. a solar power storage device; 41. and (5) power transmission line.

Detailed Description

The invention will be further explained with reference to the following figures and examples:

example 1

As shown in fig. 1, the present embodiment includes a roof retaining wall 1, a planting area 11 and a pebble area 12 are laid inside the roof retaining wall 1, the pebble area 12 is close to the inner side wall of the roof retaining wall 1, a partition plate 121 is arranged between the planting area 11 and the pebble area 12, the height of the partition plate 121 is lower than that of the roof retaining wall 1, and a drainage pipe 21 penetrating through the roof retaining wall is arranged at the bottom of the pebble area 12. The outlet end of the drainage tube 21 is provided with a discharge valve 24.

The planting area 11 is provided with a modified soil layer 112, a fine sand layer 113 and a filler layer 114 from top to bottom, and plants 111 are planted on the modified soil layer 112. The partition plate 121 is made of waterproof organic glass, so that the influence between the planting area 11 and the pebble area 12 can be effectively reduced.

The plant 111 in the planting area 11 adopts the cynodon dactylon, has strong vitality, rapid propagation, growth in pieces, no fear of trampling, drought resistance and waterlogging resistance; the improved soil layer 112 is formed by mixing sand and soil, namely 20% of sand is added on the basis of the original soil, so that the permeability coefficient of the soil is increased; the fine sand layer 113 can replace geotextile and is positioned between the improved soil layer 112 and the filler layer 114 to prevent blockage caused by the thinness of geotextile. Meanwhile, the fine sand layer 113 is also beneficial to the growth of the root system of the plant 111. The filling layer 114 is made of vermiculite and has the characteristics of loose soil, good air permeability, strong water absorption, small temperature change and the like. The pebble particle size selected for the pebble zone 12 is small, and large particle pollutants in rainwater can be intercepted.

The working process of the embodiment is as follows:

when raining, the raining enters the planting area 11 and is trapped and filtered by the plants 111, the improved soil layer 112, the fine sand layer 113 and the filler layer 114 and then accumulated at the bottom of the roof retaining wall 1; with the increase of rainfall intensity and rainfall duration, rainwater accumulated on the surface of the planting area 11 overflows through the partition plate 121 and then enters the pebble area 12; draft tube 21 conducts rainwater from pebble zone 12.

In normal operation, pumping clean water into the pebble zone through the drainage tube 21 to back flush the residual pollutants in the pebble zone; when the pebble zone is seriously blocked by pollutants and needs to be overhauled, pebbles in the pebble zone 12 are strongly washed or overturned and washed by tap water, the pollutants are discharged from the drainage tube 21 along with the washing water, the pollutants in the pebble zone are thoroughly removed, the pebble zone is kept to be permeable and smooth, and a good running state is recovered again.

Example 2

As shown in fig. 2, the present embodiment is different from embodiment 1 in that: the device also comprises a bidirectional flow pipeline 2 and a reservoir 3, wherein the reservoir 3 is positioned on the underlying surface of the roof; the bidirectional flow pipeline 2 comprises a front pipe 22, a valve 25, a water pump 26 and a tail pipe 23, the valve 25 and the water pump 26 in the middle of the front pipe 22 and the tail pipe 23 are connected in parallel, the valve 25 is arranged along the rainwater outflow direction, and the water pump 26 is arranged against the rainwater outflow direction; the front pipe 22 is communicated with the drainage pipe 21, the tail pipe 23 is communicated with the water storage tank 3 through a water conveying port 31, and the bottom of the water storage tank 3 is provided with a drain valve 32.

In fig. 2, the solar power storage device 4 is installed in an open position outside the planting area 11, and the solar power storage device 4 is connected to the water pump 26 through the power transmission line 41.

The working process of the embodiment is as follows:

when raining, the valve 25 is opened, the drain valve 24 and the drain valve 32 are closed, and rainwater accumulated on the surface of the planting area 11 overflows through the partition plate 121 and then enters the pebble area 12; the rainwater flowing out from the pebble zone 12 is discharged into the water reservoir 3 through the drainage pipe 21, the front pipe 22, the valve 25, the tail pipe 23 and the water delivery port 31.

At the interval of rainfall, valve 25, drain valve 24, and blowdown valve 32 are closed. The water pump 26 can be started by the electric energy of the solar energy storage device 4 or the electric energy of the power grid, the rainwater in the water reservoir 3 enters the water pump 26 through the water delivery port 31 and the tail pipe 23, is discharged into the pebble zone 12 through the front pipe 22 and the drainage pipe 21 after the lifting action of the water pump 26, and the rainwater gradually accumulated in the pebble zone 12 overflows through the partition plate 121 and enters the planting zone 11. Therefore, not only can the water for manual sprinkling and irrigation be reduced, but also the residual pollutants in the pebble zone 12 can be backwashed.

In the later maintenance, the valve 25 is closed, the drain valve 24 and the drain valve 32 are opened, and then the pebble area 12 and the reservoir 3 are washed by tap water, so that the polluted rainwater accumulated in the drain valve 24 and the drain valve 32 is automatically drained.

The utility model discloses have following advantage: under the prerequisite of guaranteeing green type roof normal operating, not only can reduce outer runoff of arranging, the rainwater that again can make full use of save is as vegetation water, at the rainfall interval, easily washs and maintains, the utility model discloses can work for a long time.

Claims

1. A green roof, comprising a roof retaining wall (1), characterized in that: a planting area (11) and a pebble area (12) are laid inside the roof retaining wall (1), and the pebble area (12) is adjacent to the roof retaining wall (1) On the inner side wall, a partition (121) is arranged between the planting area (11) and the pebble area (12). Drainage tube (21) is fitted through the roof parapet.

2. The green roof according to claim 1, characterized in that: the planting area (11) is provided with an improved soil layer (112), a fine sand layer (113) and a filler layer (114) from top to bottom, and plants (111) is planted on an improved soil layer (112).

3. The green roof according to claim 1 or 2, characterized in that: it further comprises a bidirectional flow pipeline (2) and a reservoir (3), and the reservoir (3) is located on the underlying surface of the roof; the The bidirectional flow pipeline (2) includes a front pipe (22), a valve (25), a water pump (26) and a tail pipe (23), and the valve (25) and the water pump between the front pipe (22) and the tail pipe (23) (26) are connected in parallel, the valve (25) is installed in the direction of the outflow of rainwater, and the water pump (26) is installed in the opposite direction of the outflow of rainwater; 31) It is connected to the reservoir (3), and the bottom of the reservoir (3) is equipped with a drain valve (32).

4. The green roof according to claim 3, characterized in that: the solar power storage device (4) is installed outside the planting area (11), and the solar power storage device (4) communicates with the water pump (26) through the transmission line (41) connect.